Obviously not with actual blistery chicken pox but DS, who is 2, came out in spots on Tuesday and, as far as I can see, they are all now crusted over. Some didn't turn into blisters at all but were just little pinky spots. All the children have been invited to a birthday party this afternoon. Is it safe to take DS or will he still be horribly contagious? I've had him stripped off to check for blisters and can't see any. Any advice?